1000122122222 has 4 divisors (see below), whose sum is σ = 1500183183336. Its totient is φ = 500061061110.

The previous prime is 1000122122177. The next prime is 1000122122243. The reversal of 1000122122222 is 2222212210001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1000122122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250030530554 + ... + 250030530557.

It is an arithmetic number, because the mean of its divisors is an integer number (375045795834).

Almost surely, 2^{1000122122222} is an apocalyptic number.

1000122122222 is a deficient number, since it is larger than the sum of its proper divisors (500061061114).

1000122122222 is an equidigital number, since it uses as much as digits as its factorization.

1000122122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500061061113.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1000122122222 its reverse (2222212210001), we get a palindrome (3222334332223).

The spelling of 1000122122222 in words is "one trillion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-two".